Unlike UID revocations which are "reversible" by newer UID
self-signatures, a subkey revocation should be "permanent" even if
followed by a newer self-signature.
The RFC is ambiguous on this, but this is the convention used by (e.g.)
GnuPG. The rationale for this behaviour is available as comments within
the GnuPG source.
UID signatures:
50c98c7ed6/g10/getkey.c (L1668-L1674)
Subkey signatures:
50c98c7ed6/g10/getkey.c (L1990-L1997)
this requires a more up to date version of gradle-android-test-plugin
than is currently in the repositories. it must be added to the local
maven repo using ./install-custom-gradle-test-plugin.sh before
compiling.
